Dual-Material Glass Support for Precise Heat Chamfering
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Solution Overview
Problem
Existing edge finishing technologies for glass panels, particularly thin glass panels, face challenges in achieving reliable and accurate chamfering without causing damage or defects, which affects the panel's strength and bending performance.
Innovation Solution
A heat chamfering apparatus with a dual-structured support unit, comprising a contact support portion made of a material with low thermal conductivity and coefficient of thermal expansion, and a base portion made of a material with high thermal conductivity, applies thermal shock to chamfer the glass edge while minimizing deformation and defects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a single-material support unit is used, then the device complexity is low, but the manufacturing precision and reliability of heat chamfering cannot be ensured
Solution Approach 1:
The support unit is divided into two distinct parts: a contact support portion that directly touches the glass panel and a base portion that provides structural support. This segmentation allows each part to be optimized for its specific function - the contact portion for precision and thermal compatibility, and the base portion for stability and strength.
Solution Approach 2:
Different materials are assigned to different parts of the support unit based on local requirements. The contact support portion uses a material with low thermal conductivity and low coefficient of thermal expansion to minimize thermal effects on the glass, while the base portion uses a material with high thermal conductivity to dissipate heat efficiently. This local differentiation of material properties resolves the contradiction between precision and structural complexity.
2Temperature
If high thermal conductivity material is used for the contact support portion, then heat dissipation is improved, but thermal stress and surface damage increase
Solution Approach 1:
The contact support portion is specifically designed with low thermal conductivity and low coefficient of thermal expansion to minimize thermal stress and surface damage on the glass panel. This local optimization at the critical interface between the support unit and glass panel resolves the contradiction between heat dissipation needs and thermal damage prevention.
Solution Approach 2:
The contact support portion acts as an intermediary between the heat source and the glass panel. By using materials with specific thermal properties (low thermal conductivity and low thermal expansion coefficient), it mediates the thermal interaction to protect the glass from thermal stress and surface damage while still allowing controlled heat application for chamfering.
3Productivity
If the support unit has high thermal conductivity, then heat chamfering efficiency is improved, but the reliability of the glass panel decreases due to thermal shock
Solution Approach 1:
The contact support portion uses materials with low thermal conductivity and low coefficient of thermal expansion to minimize thermal shock to the glass panel, thereby maintaining reliability. The base portion separately handles heat dissipation through its high thermal conductivity material, separating the functions of thermal management and glass protection.
Solution Approach 2:
By segmenting the support unit into contact support portion and base portion with different material properties, the system can simultaneously achieve efficient heat chamfering through the base portion's thermal conductivity while protecting the glass panel through the contact portion's low thermal conductivity and low thermal expansion characteristics.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The apparatus ensures a reliable and efficient chamfering process that enhances edge strength and bending performance of glass panels by reducing thermal stress and preventing surface damage.
Implementation Method 1
the first material may have a smaller change in temperature due to lower thermal conductivity
Implementation Method 2
a smaller change in size at high temperature due to a smaller coefficient of thermal expansion
Implementation Method 3
a heat chamfering unit heat-chamfering an edge of the glass panel by applying thermal shock thereto
Data Source
AI summary
A heat chamfering apparatus. A support unit supports a glass panel. A heat chamfering unit heat-chamfers an edge of the glass panel by applying thermal shock thereto. The support unit includes a contact support portion supporting the glass panel while in contact with the glass panel and a base portion configured to support the contact support portion. The contact support portion is formed from a first material. The base portion is formed from a second material. The first material has a smaller change in temperature due to lower thermal conductivity and a smaller change in size at high temperature due to a smaller coefficient of thermal expansion while being more ductile due to lower hardness, compared to the second material. In a heat chamfering method, a glass panel is located on a support unit, and an edge of the glass panel is heat-chamfered by applying thermal shock thereto.